struct old_sigaction;
long sys_mmap2(struct s390_mmap_arg_struct __user *arg);
-long sys_ipc(uint call, int first, unsigned long second,
+long sys_s390_ipc(uint call, int first, unsigned long second,
unsigned long third, void __user *ptr);
long sys_s390_newuname(struct new_utsname __user *name);
long sys_s390_personality(unsigned long personality);